1SDB | pdb_00001sdb

PORCINE DESB1-2 DESPENTAPEPTIDE(B26-B30) INSULIN

• PDB DOI: https://doi.org/10.2210/pdb1SDB/pdb

• Classification: HORMONE
• Organism(s): Sus scrofa
• Mutation(s): No 


• Deposited: 1996-01-29 Released: 1997-02-12 
• Deposition Author(s): Liang, D.-C., Diao, J.-S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free: 
  0.220 (Depositor) 
• R-Value Work: 
  0.203 (Depositor), 0.192 (DCC) 

Literature

Structure of monomeric porcine DesB1-B2 despentapeptide (B26-B30) insulin at 1.65 A resolution.

Diao, J.S., Wan, Z.L., Chang, W.R., Liang, D.C.

(1997) Acta Crystallogr D Biol Crystallogr 53: 507-512

• PubMed: 15299880 
• DOI: https://doi.org/10.1107/S0907444997004034
• Primary Citation Related Structures: 
  1SDB


• PubMed Abstract: 
  

  Insulin has a concentration of 10(-8)-10(-11) M in the blood which ensures that it circulates and exerts its physiological functions in vivo as a monomer. The crystal structure of monomeric porcine desB1-B2 despentapeptide (B26-B30) insulin (DesB1-2 DPI) with M(r) = 4934 Da has been determined at 1.65 A resolution using the molecular replacement method. A structural comparison between DesB1-2 DPI and 2Zn insulin reveals that the conformation of DesB1-2 DPI is more similar to molecule I than molecule II of 2Zn insulin. The remarkable conformational difference between B25-Phe in DesB1-2 DPI and B25-Phe in despentapeptide (B26-B30) insulin (DPI) indicates that the residue B25-Phe possesses great flexibility and mobility.

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Organizational Affiliation: 
• National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 4.98 kDa 
• Atom Count: 378 
• Modeled Residue Count: 44 
• Deposited Residue Count: 44 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DESB1-2 DESPENTAPEPTIDE (B26-B30) INSULIN	A	21	Sus scrofa	Mutation(s): 0
UniProt
Find proteins for P01315 (Sus scrofa) Explore P01315  Go to UniProtKB:  P01315

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
DESB1-2 DESPENTAPEPTIDE (B26-B30) INSULIN	B	23	Sus scrofa	Mutation(s): 0
UniProt
Find proteins for P01315 (Sus scrofa) Explore P01315  Go to UniProtKB:  P01315

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free:  0.220 (Depositor) 
• R-Value Work:  0.203 (Depositor), 0.192 (DCC) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 26.88	α = 90
b = 24.5	β = 103.83
c = 28.11	γ = 90

Software Package:

Software Name	Purpose
XENGEN	data collection
GPRLSA	refinement
XENGEN	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-02-12 
Deposition Author(s): Liang, D.-C., Diao, J.-S.

Revision History  

• Version 1.0: 1997-02-12
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-06-05
  Changes: Data collection, Database references, Other
• Version 1.4: 2024-10-23
  Changes: Structure summary